Penny Fidget Spinner

thingiverse

Fidget spinner using US pennies as weights, in various sizes. The tiny ridges that hold the bearings and pennies in place fit snugly on Bones Reds bearings*. These bearings have a smaller chamfer than VXB bearings*, which I also use. The pennies and bearings should stay securely in place without glue and can be easily removed. Older US pennies, made before 1982, are heavier due to their copper content, weighing almost 25% more. If you want to adjust the tolerances, you can do so in Onshape*.